Brush-blank.



J. H. ABBOTT.

BRUSH BLANK.

APPLICATION FILED 111111: 16, 1911.

1,054,161. Patented Feb. 25, 19131 coumum PLANOGRAIJI co WASHINGTON.0.1".

UNITED STATES PATENT JAMES HERMAN ABBOTT, OF PHILADELPHIA, PENNSYLVANIA.

BRUSH-BLAH K.

1/ '0 all whom it may concern:

Be it known that I, JAMES HERMAN AB- BOTT, a citizen of the UnitedStates, and a resident of Philadelphia, Pennsylvania, have invented acertain new and useful Brush- Blank, of which the following is aspecification.

The purpose of my invention is to secure a bristle-holding ring to thedished plates forming the ends of my brush in such a way asautomatically to bring the parts into proper position and relationduring assemblage, and to stiffen the plates by connection with thering.

A further purpose of my invention is to use a ring for guiding andretaining the bristles and to connect this ring with each adjoiningplate.

A further purpose of my invention is to make continuous assembly ofbrush parts for thick brush-making simple and effective.

I prefer to illustrate my invention by that form thereof which I havefound to be simple, cheap and effective.

Figure 1 is a central longitudinal section of a structure embodying myinvention. Fig. 2 is a top plan view of the dished plates andintermediate ring of Fig. 1 in the form of a blank. Fig. 3 is a sectionof some of the parts of Fig. l partly assembled. Fig. l is a Viewsimilar to Fig. 2 of a blank for a thicker brush. Fig. 5 is a centrallongitudinal View of a brush made from a blank such as is shown in Fig.4e. Fig. 6 is a perspective view of the parts of Fig. 5 1n process ofassemblage. Fig. 7 is a. side elevation of a spindle and tube ofmodified form.

Similar numerals of reference indicate like parts in the drawings.

1 designates a spindle upon which is mounted a tubular member 2 by meansof the change of contour at 3, described and claimed by me in acopending application, Ser. No. 633,518, of even date herewith. Theenlargement of the spindle in one direction at the point 3 withintermediate hollowing results in corresponding shaping of the tubularmember as the spindle passes thereover and reformation of the tubularmember therebeyond. The ends 4: and 5 of the tubular member are shown asflared to hold plates 6 and 7 in place, gripping the bristles 8 betweentheir outer edges.

My invention resides primarily in the relation existing betweenadjoining plates 6 Specification of Letters Patent.

Application filed June 16, 1911.

Patented Feb. 25,1913.

Serial No. 633,519.

and 7 and a guiding and bristle-retaining ring 9 which lies between themand is connected with the two plates preferably at opposite sides of thering, by means of strips 10. The initial construction is bestillustrated in Fig. 2, where the parts are seen in their form as stampedby a single pair of dies, The plates 6 and 7 are oppositely hollowed ordished, thus departing from true disk form. The plate 6 is shown asconcaved toward the observer, while the plate 7 is convexed toward him.

In assemblage, the ring 9 is threaded with the required quantity ofbristles of appropriate length. The plate 7 is then bent slightly awayfrom the observer and the spindle 1 is inserted through the opening 11.The inner end of the spindle is then pressed into the body of thebristle from the side and passed through the opening 12 of the ringtoward the observer. The plate 6 is then bent toward the observersutliciently for the spindle 1 to be passed through its opening 13.

The plates (3 and 7 upon opposite sides of the ring 9 result in thespindle passing at all times through the center of the ring andautomatically distribute the bristles uniformly about the ring. I preferto make the rings large enough so that there shall be plenty of room forthe bristles, spindle and tube as the bristles will then distribute welland no clamping or gripping of the bristles is needed here. The bristlesare held by the grip of the outer parts of the dished plates, nearest tothe ends of the bristles and, hence, to the point at which they do theirwork.

Obviously, any of a variety of fastening means could be used forretaining the parts. lVith the form shown, the tubular member 2 is thenthreaded upon the spindle. i LS the parts are pressed together, theautomatic division of the bristles about the circumferences of theplates 6 and 7 is continued and it is completed when the spindle becomesapproximately Jerpendicular to the plane of the ring. In experience,this division is not interfered with by the connections 10, which are sosmall as not to form an appreciable interruption to the uniformity ofthe bristle distribution about the brush. The effect of theseconnections upon the appearance of the brush is still further reduced bythe slits 1a which permit the bend of the metal to occur at or inside ofthe edge of the plates 6 and 7.

The parts are preferably pressed together at the same time that thetubular member 2 is pushed through the plates 6 and 7. The spindle ispressed downwardly to the position shown in Fig. 1, either before orafter or during the time that the tubular member 2 is pressed to place.The flared end 4.- presses against one of the plates and the other plateis held by the expansion of the other end of the tube at 5 or by aprojection, preferably annular, at any desired point upon the spindle,which projection becomes a head where it is at the end of the spindle asat 15 in Fig. 7. The operations described are readily performed by meansof a single set of dies and at one movement.

In the form shown in Fig. 4, I have indicated the blank used by me inmaking a thick brush such as is shown in Fig. 5, this being in effect adouble brush, as it contains twice the quantity of bristles contained inthe brush of the type shown in Fig. 1.

The blank shown in Fig. 4 will be seen to consist of two blanks of thetype shown in Fig. 2, except that I prefer to use a single fiat spacingplate or disk 16 at the center instead of the two reversely dishedplates convexed toward each other, which would here be found if a mereduplication of the blank of Fig. 2 were presented. This gives a morecompact brush with the bristles closer together at the middle of thecylindrical surface formed.

The manner of assemblage is the same as that described in connectionwith the Single brush except that bristles are threaded through both ofthe rings 9, and that the path of the spindle 1 follows the course ofpassage through opening 11, into the bristles of ring 9 and through itsopening 12, through opening 17 of plate or disk 16, into the bristlesand through the opening 12 of the second ring 9 and through the opening13 of the inner plate 6. The bristles divide, as before, about thecircumferences of the two plates 6 and 7, distributing also about theintermediate spacing disk 16 to form a double brush. This is not merelytwo brushes placed together, but diflers therefrom by having its centerline stiffened by an increased quantity of bristle there, since thebristles shown in Fig. 1 as lying between 18 and 18, Fig. l, in the twobrush parts, are pressed against each other with a spacing at the point19 corresponding to but a single thickness of metal. If two brushes wereplaced together there would be a spacing corresponding to the doublethickness of metal as well as the convexities of the two outer plates.

In Fig. 6 I have shown the parts of Fig. 4 in partially assembledposition with the spindle inserted and tube upon it.

As will be noted from Fig. 5, the tube 2, here shown, has a lengthcorresponding to the thickness of the complete brush, but is held by asingle fastening 3 of the form shown in Fig. 3. A short tube 2 could beused at either end, the two cooperating with each other or eithercooperating with a swelled part upon the spindle at any point, oneexample of which is seen in the head 15 in Fig. 7.

It will be evident that my construction connects all of the metal partsof the brush, guides and centers the spindle therein and securesdistribution of the bristles about th same, whatever the thickness ofthe brush, and that thick brushes are well supported, compact, firm andeasily constructed by my invention.

Obviously, my brush is not confined to use upon the end of the spindleand may be made in any thickness desired according to the quantity ofbristle upon each ring and the number of rings and spacing plates employed.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In a device of the character stated, abrush blank, comprising outer bristle-retaiir ing brush platesoppositely dished, a ring and a connection from each plate to the ring.

2. In a device of the character stated, a brush blank comprisingbristle-clamping plates, rings connected therewith and spaced therefromand a plate spaced from each of said rings and connected thereto.

J AMES HERMAN ABBOTT.

lVitnesses TILLIAM STEELL JACKSON, HELEN I. KAUFFMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatents, Washington, D. C.

